Gas-generating apparatus



July 9, 1929. H. c. ELKlNs GAS GENERATING APIARATUS Filed April 23, 1927 Patented July 9, 1929..

My invention relatesmore specificallyto a portable apparatus orfv generating a volume ot poisonous..gasestor use. ini connection with the destructionlo'trodents? i A chietfl object is to providea simpleportable valve,K ,controlled ap pari n tus:y ,that infill quickly lgenerate :poisonous; ,gasesandi direct the same under rInfessure into; the b urrows of rodentsfl'orexterminatingthe same. y ,g s p Another object is to provide an apparatus that inay be conveniently,c'oiniected tot the exhaust `motory vehicle r Itorcying ,the

generated gases into ,the aniy al burrowsmor u'hiclrmay .bequiekly connected toga manu; all yl ,operatedy s air i pgessuref. pump- ,ughen, l a motor-vehicleisgnotpilailltlb a* d f Briefly, ,thefiirentelcen '11s. st l iet a, phi'- rality of pipelines controlled by valvesnliaving a pair y, of I'containers attaehed'thei'eto 'for the 'i chemicals `utilized for, generating v'the poisonous gases- 1lrpyisifo,l is ,nitide for connecting the plpe lines of the apparatusl to the exhaust oi a motor vehicle for forcing the generated gases into the blu-rows of the animals whose extermination is desired. The valve system is so arranged that the generated gases may be forced from the apparatus into the animal burrows by manually operated means when a motor vehicle is unavailable.

The above objects are accomplished by means ot' the apparatus described herein and illustrated in the accompanying drawing, in which:

'lhe ligure ot the drawinfr represents a side elevation ot' the apparat-us with the chemical containers in section, showing the apparatus erected adjacent a rodents burrow.

In the drawings the apparatus preferably consists ot' a pipe standard 5 havingr connected to its lou'er end a spike member 6 for maintaining the apparatus in an upright position during its operation. Con nected to the upper end oi the standard is a cross pipe fitting 7 from Whose lateral outlets 8, 9, extend outlet pipes 10, 1l, each provided on their outer ends with L fittings 12, 13. Extending from each of littings 12, 13 are pipe lines 14, 15, line 14: constituting a compressed air line, While line 15 is a gas outlet line from whence the poisonous gases are pumped into burrow 1G ot the rodents.

The inlet of the air line 14E is threaded tor the reception of a flexible hose l? which may be connected te a suitable source et pressure i VGASLGENE'Ra'rING APPARATUS.

' Appucat'ion'aiqd April 23, '1927. serial- No. 186,004.

` l Affinita# on fHiHpANns, 'CALIFQBN'IA such as the. exhaust pipe of an auto vehicle t (not shown). GasI outlet line.15 ais exactly Isimilarto the air line and to its outlet end is connected a flexible hose 18'designed to be insertedinto the entrance oit' the animal burrow 16 asshown.

, Connected ito `theimper vertically disi posed outlet ol thecrosstitting- 7 .by a nip-A ple 19 1s another cross fitting 20.rom whose .lateral outlets 21, 22, pipe lines23, 2tex ,tend'in avertical direction rhaving secured vto their upper ends cylindrical metal chemi- Acalcontamers 25, `26. These containersare :glass lined to prevent destructive .ac tionotl the chemicals on the` metal, and4 their upper endsareprovided with Ifilling ports closed :.v

'Withsuitable stoppers. .l i. .s i, Pipe lines 23, 2li, leading from" the containers are each provided with a' pair ,of manually operated valves A2T, v2,8, located one above another` and spaced apart bymeasuri inginil'iples29. Valves 27 control the `flow ot chemicals from the containers to the measuring nipples, while valves 2S control the flow olf measured chemicals from the nipples to the pipe line 5 therebelow where the gas is formed by the admixture ot the chemicals.

lipe lines 14, and 15, are provided with valves 3l), 3l; valve 30 controlling the gas outlet to the flexible hose 18 while valve 31 controls the air pressure inlet from the exhaust ol the motor vehicle.

In case a motor vehicle is not available for forcing the generated gases from the apparatus into the animal run\\'ays, each ot' lines 1st.. l5 is provided with valves 32, 33 disposed directly below valves 30, 231. Valve 32 is connect-ed to a manually operated pneumatic air pump (not shown) oi" the type usually employed in connection with the inflation of pneumatic vehicle tires, and valve is connected by a hose (not shown) to the animal burrow.

The operation of the apparatus is a compara-tively simple matter. llien a motor vehicle is available the apparatus after it is erected adjacent the animal burrow and the flexible hose 18 is inserted in the mouth or entrance to the burrow and the earth is banked around the hose to completely seal the entrance. Hose 17 is then connected to the vehicle exhaust and all the valves are closed. Valves 27 :from the chemical containers are then opened to fill the measuring nipples 29 'with the required quantity of chemicals-wv afftgerfgwhieh the p ,'ya'yes 2 are closedan 'valve" 28 aref-opened topinit of an admixture of the chemiczile` in the afermation of the poisonolusfgu'see. ,I hayeiound y container pipe lilies oilneasuring L predetermi-nedguentity of fluid ehenneals before constituting a gasoutletl i ifi.; i. il:

ip ng a, plurelityof liquid ehenrifaxilltainers, a vave controlled p"1pe-ine, imlve controlled pipe line leading from each container to the first named lhneglleans on each of' Saud delivery to said first named pipe line, one end of saidbpipe'fliinae.:adapted to be connected to a. source of fluid pressure and the other end 2. A device 'of-the class described'cemp'rie` in'g'n suitable 'Supportingmenrbem in rilgid pipe line'eonneeted'fo the upper end' 'of Seid eilpport,vfi.l vee1 lto 'control the itiiet'vfiiid out let of `said' pipeline, flexible pipe"lis nee-ted to the 'inlet 'and' outlet of "'suid rigid pipe" li'ne,=the ini'et 'line' adiq'ited' tobe Con-- neet-ed to fr soi'irceof' preS'Siirejiind 'tliieloiitiet line constituting :Ligas disehargefa" pair of eheiiiici containers connected by pipe ihiies April, 1927; i 

